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Graco was founded in 1942 in Philadelphia, Pennsylvania, by Russell Gray and Robert Cone (hence the name) as Graco Metal Products, a company that fabricated machine and car parts. Rex Thomas (one of two engineers hired to come up with a sustainable product) watched his wife sitting on the porch, rocking their baby in a swing with a string tied ...
Graco Inc. is an American industrial company that specializes in the development and manufacturing of fluid-handling systems and products. The company is headquartered in Minneapolis, Minnesota , and markets its products to customers worldwide.
70 years after pulse code cab signals had been introduced, the 4 speed design was found to be insufficient for speeds not envisioned when the system was designed. The two most pressing problems were the use of high speed turnouts , which allowed trains to take a diverging route faster than the normal 30 or 45 mph covered by the existing cab ...
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The chirp pulse compression process transforms a long duration frequency-coded pulse into a narrow pulse of greatly increased amplitude. It is a technique used in radar and sonar systems because it is a method whereby a narrow pulse with high peak power can be derived from a long duration pulse with low peak power.
Magnetic pulse welding (MPW) is a solid state welding process that uses magnetic forces to weld two workpieces together. The welding mechanism is most similar to that of explosion welding . [ 1 ] Magnetic pulse welding started [ clarification needed ] in the early 1970s, when the automotive industry began to use solid state welding.
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The first operational pulse-Doppler radar was in the CIM-10 Bomarc, an American long range supersonic missile powered by ramjet engines, and which was armed with a W40 nuclear weapon to destroy entire formations of attacking enemy aircraft. [1] Pulse-Doppler systems were first widely used on fighter aircraft starting in the 1960s. Earlier ...